In classical physics, where the speeds of source and the receiver relative to the medium are lower than the velocity of waves in the medium, the relationship between observed frequency f and emitted …

The truck is moving away from the girl at =37.42ms^-1 This is an example of the Dopler's effect The speed of sound at 28^@C is c=331+0.6*28=347.8ms^-1 The observed frequency is f=475Hz The …

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Statement number (2) is correct, H^(+) can oxidize iron and nickel can reduce Br_2. Standard electrode potentials are used to express the ability of a substance to lose electrons. When you compare the …

Use this equation to find the frequency of a photon that has a wavelength of #"12.4 cm"#. Notice that the speed of light is expressed in meters per second, so make sure that you convert the wavelength from …

An object with a mass of 2kg is revolving around a point at a distance of 7m. If the object is making revolutions at a frequency of 5H z, what is the centripetal force acting on the object?

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The rate of rotation of a solid disk with a radius of #4 m# and mass of #2 kg# constantly changes from #8 Hz# to #1 Hz#. If the change in rotational frequency occurs over #5 s#, what torque was applied …

Explanation: To calculate the molar mass of a compound, multiply the subscript of each element from the formula times the molar mass of the element. The molar mass of an element is its atomic weight …

One way to know these are different is that the graph of y = cos (4x) has frequency 4, while y = 4 cos (x) has amplitude 4.